]> A barcode-01936329 Thailand Prachuap Khiri Khan Kaeng Krachan National Park. On way to Phraek Ta Khraw waterfall Piper umbellatum var. glabrum C. de Candolle C. de Candolle 2019-10-08 19:25:49 D. J. Middleton Ruengwit Namdang, Rachun Pooma, Somran Suddee, Suwat Suwanachat, Kyle Williams